Trump says change of power in Iran would be ‘best thing’, as he sends second carrier

US President Donald Trump said on Friday that a change of government in Iran would be the “best thing that could happen”, as he sent a second aircraft carrier to the Middle East to ratchet up military pressure on the Islamic republic. Trump’s comments were his most overt call yet for the toppling of Iran’s clerical establishment, and came as he pushes on Washington’s arch-foe Tehran to make a deal to limit its nuclear programme. At the same time, the exiled son of the Iranian shah toppled in the...